Length of the largest intron allowed in tblastn for linking HSPs (0 disables linking)

-B

Number of concatenated queries, for blastn and tblastn [Integer] Optional

-V

Force use of old engine [T/F] Optional

-C

Use composition-based statistics for tblastn:
D or d: default (equivalent to F)
0 or F or f: no composition-based statistics
1 or T or t: Composition-based statistics as in NAR 29:2994-3005, 2001
2: Composition-based score adjustment as in Bioinformatics 21:902-911, 2005, conditioned on sequence properties
3: Composition-based score adjustment as in Bioinformatics 21:902-911, 2005, unconditionally
For programs other than tblastn, must either be absent or be D, F or 0 [String]